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The Extrema Ratio Panthera blade shape may have originated with sailors and possible early Viking warriors. The Panthera has a Wharncliffe shape featuring a clean, simple cutting edge with a Wharncliffe tip. Intended to be a great cutter and is made to be sturdy. A plus is its high-speed razor type opening system. Excellent general utility knife useful for your EDC needs as well as self-defense.


The blade extends past the closed handle and ends in a razor-type flipper that gives you rapid, easy opening of the blade. Slightly under four inches so it is legal in areas where a longer blade is restricted. Simple, well designed shape allowing excellent control.


Slightly curved and does not have a clip. Ergonomically designed to give you a good grip. Has a generous lanyard hole. Contains a liner-lock to hold the Panthera blade securely. The Panthera has the Extrema Ratio Italian imprint.

Total Length of Knife Opened: mm 246.89 (9.72 inches)

Length of Closed Knife (Excluding Razor Flipper): mm 146.05 (5.75 inches)

Blade Length: mm 99.82 (3.93 inches)

Weight of Knife: g 130.41 (4.6 ounces)

Blade Thickness (Widest Part): mm 3.00 (.12 inches)

Blade Width (Widest Section): mm 27.94 (1.10 inches)

Closed Knife Thickness: mm 11.00 (0.43 inches)

Blade Steel: Bohler N690 cobalt stainless steel*

Blade Hardness: Rockwell 58 HRC

Grinding: Razor grind

Serrations on Blade: No

Lock: Liner-lock

Handle Material: Anodized anticorodal aluminum alloy **

Belt Clip: No


* The blade is made with N690 cobalt stainless steel; a high performance steel with excellent cutting and sharpening characteristics. This steel is also used in the butchering industry and to make surgical instruments.

** The handle is made of black anodized anticorodal aluminum, an aluminum alloy that is very strong and corrosion resistant.

Availability: Usually ships in 2-3 business days

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